Felt buggy, not needed in WP 5

This worked for me for a while, but the popup panel on each page would sit over things at the bottom of my pages, even preventing me from editing some blocks, which was irritating.
A colleague told me he was seeing ads all over the page; I said that was impossible, it’s an internal site, there should be no ads. Turns out it was this plugin, and I just had AdBlocker preventing me from seeing them! Bleh. Then I found out the Gutenberg HTML block can host script tags, so I just threw my page-specific JavaScript in there and boom, no more need of a plugin!